Abstract: As water scarcity becomes a bigger issue in South Africa so does the need for water saving practices. Couple this with the push to ‘green’ our cities and you get an interesting and, what some may consider, complex situation. As Water Scientists we are greatly positioned to provide direction towards solving this situation. More and more we are hearing about greywater reuse, especially it’s very real advantages in terms of irrigation, and, thereby, water savings (Jacobs and Van Staden, 2008; Van der Walt, 2012; Gouveia, 2013; Ilemobade et al., 2013; Van der Walt, 2013; Natha, 2015). In addition, more research is being performed on the use of greenroofs on a residential level (Van der Walt, 2013; Baloyi, 2014; Padiachy, 2014; Borchers et al., 2015). The Water Research Group of the University of Johannesburg has been performing a combination of these research areas since 2012 and have, thus far, obtained interesting results that have been used, in conjunction, to better understand the possibilities of the use of these two systems.